2003 NISSAN X-TRAIL steering

PRIMARY TIMING CHAIN
EM-193
[YD22DDTi]
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9. Install timing chain slack guide.
10. Install chain tensioner.

Push the plunger of the chain tensioner. While keeping
plunger pressed down with a push pin, etc., install chain ten-
sioner.

After installation, pull out the push pin holding the plunger.
CAUTION:
Check again that the alignment marks on sprockets and the
colored alignment marks on timing chain are aligned.
11. Install front oil seal to oil pump housing.

Using the suitable drift [62 mm (2.44 in) dia.], force fit the seal
until it hits the bottom.
CAUTION:
Do not touch lips of oil seal. Make sure seal surfaces are
free of foreign materials.
12. Install power steering oil pump cover to oil pump housing.

Apply a continuous bead of liquid gasket with the tube presser
(special service tool: WS39930000) as shown in the figure.
Use Genuine Liquid Gasket or equivalent.

Apply liquid gasket on oil pump-side surface.
13. Install oil pump housing.
PBIC2404E
JEM134G
JEM142G
JEM143G

ENGINE ASSEMBLY
EM-209
[YD22DDTi]
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REMOVAL
Description of work
Remove engine, transaxle and transfer assembly with front suspension member from vehicle downward. Sep-
arate suspension member, and then separate engine and transaxle.
Preparation
1. Remove hood assembly. Refer to BL-12, "HOOD" .
2. Drain engine coolant from radiator drain plug. Refer to CO-31, "
DRAINING ENGINE COOLANT" .
3. Remove the following parts.

LH/RH engine undercover

LH/RH front wheels

Battery; Refer to SC-3, "BATTERY" .

Drive belts; Refer to EM-132, "Removal and Installation" .

Air duct and air cleaner case assembly; Refer to EM-133, "Removal and Installation" .

Alternator; Refer to SC-16, "Removal and Installation" .

Radiator and cooling fan assembly; Refer to CO-34, "Removal and Installation" and CO-36, "COOL-
ING FAN" .

Charge air cooler; Refer to EM-135, "CHARGE AIR COOLER" .
4. Disconnect engine room harness from the engine side and set it aside for easier work.
5. Disconnect all the body-side vacuum hoses and air hoses at engine side.
Engine room LH
1. Disconnect fuel feed hose and return hose, and plug it to prevent fuel from draining. Refer to EM-136,
"INTAKE MANIFOLD" .
2. Disconnect heater hose, and install plug it to prevent engine coolant from draining. Refer to EM-136,
"INTAKE MANIFOLD" .
3. Remove clutch operating cylinder from transaxle, and move it aside. Refer to MT-17, "
TRANSAXLE
ASSEMBLY" and CL-10, "OPERATING CYLINDER" .
4. Disconnect shift cable from transaxle. Refer to MT-14, "
CONTROL LINKAGE" .
Engine room RH
1. Remove engine coolant reservoir tank. Refer to CO-34, "RADIATOR" .
2. Remove A/C compressor with piping connected from engine. Temporarily secure it on body with a rope to
avoid putting load on it. Refer to ATC-144, "
Removal and Installation of Compressor" .
Vehicle underbody
1. Remove exhaust front tube. Refer to EX-2, "Removal and Installation" .
2. Remove propeller shaft. Refer to PR-4, "
Removal and Installation" .
3. Remove steering shaft from steering gear. Refer to PS-10, "
STEERING COLUMN" .
4. Disconnect power steering fluid cooler piping at a point between body and engine. Refer to PS-34,
"HYDRAULIC LINE" .
5. Remove ABS sensor from brake caliper. Refer to BRC-45, "
WHEEL SENSORS" (ABS), BRC-116,
"WHEEL SENSORS" (ESP/TCS/ABS).
6. Remove brake caliper with piping connected from steering knuckle. Temporarily secure it on body with a
rope to avoid load on it. Refer to BR-27, "
FRONT DISC BRAKE" .
7. Remove left and right suspensions from steering knuckle under strut. Refer to FSU-5, "
FRONT SUSPEN-
SION ASSEMBLY" .

ENGINE ASSEMBLY
EM-211
[YD22DDTi]
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8. Remove power steering oil pump with piping connected from engine. Move it aside on suspension mem-
ber. Refer to PS-34, "
HYDRAULIC LINE" .
9. Remove front engine mounting and rear engine mounting through-bolts to remove suspension member.
10. Remove starter motor. Refer to SC-21, "
STARTING SYSTEM" .
11. Separate engine and transaxle. Refer to MT-17, "
TRANSAXLE ASSEMBLY" .
INSTALLATION
Install in the reverse order of removal.

Do not allow engine oil to get on mounting insulator. Be careful not to damage mounting insulator.

When installation directions are specified, install parts according to the direction marks on them referring
to figure of components. Refer to EM-208, "
ENGINE ASSEMBLY" .

Make sure that each mounting insulator is seated properly, and tighten mounting bolts and nuts.
INSPECTION AFTER INSTALLATION

Before starting engine, check the levels of engine coolant, engine oil and working fluid. If less than
required quantity, fill to the specified level.

Before starting engine, bleed air from fuel piping. Refer to FL-18, "Air Bleeding" .

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of engine coolant, lubricants, working
engine oil, fuel and exhaust gas.

Bleed air from passages in pipes and tubes of applicable lines, such as in cooling system.

After cooling down engine, again check amounts of engine coolant, engine oil and working fluid. Refill to
specified level, if necessary.
Summary of the inspection items:
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Working fluid Level Leakage Level
Fuel — Leakage —
Exhaust gas — Leakage —

EM-246
[YD22DDTi]
SERVICE DATA AND SPECIFICATIONS (SDS)

Spill tube Nozzle side 18.7 (1.9, 14)
Cylinder head side 18.7 (1.9, 14)
Fuel rail57.5 (5.9, 42)
Fuel pump31.4 (3.2, 23)
Fuel pump sprocket39 (4.0, 29)
*1 Camshaft bracket 1) 2 (0.2, 1)
2) 6 (0.6, 4)
3) 12 - 13 (1.2 - 1.4, 9 - 10)
Front chain case
7.9 (0.8, 70)*
2
Chain tensioner
9.6 (0.98, 85)*2
Tension guide23.5 (2.4, 18)
Slack guide23.5 (2.4, 18)
Camshaft sprocket 143 (15, 105)
Oil pump housing12.5 (1.3, 9)
Power steering oil pump 53.5 (5.5, 39)
Rear chain case12.5 (1.3, 9)
Engine coolant temperature sensor 13.5 (1.4, 10)
*1 Cylinder head 1) 35 - 44 (3.5 - 4.5, 26 - 32)
2) 180 degrees to 185 degrees
3) 0 (0, 0)
4) 35 - 44 (3.5 - 4.5, 26 - 32)
5) 90 degrees to 95 degrees (angle
tightening)
6) 90 degrees to 95 degrees (angle
tightening)
Glow plug20.5 (2.1, 15)
*1 Flywheel103 - 112 (10.5 - 11.5, 76 - 83)
Oil pressure switch13 - 17 (1.25 - 1.75, 9 - 12)
Oil jet6.0 - 10.8 (0.62 - 1.1, 54 - 95)
Oil jet relief valve40 - 58 (4.0 - 6.0, 29 - 43)
Rear oil seal retainer12 - 13 (1.2 - 1.4, 9 - 10)

EC-34
[QR (WITH EURO-OBD)]
ENGINE CONTROL SYSTEM

System ChartEBS010L8
*1: This sensor is not used to control the engine system under normal conditions.
*2: This input signal is sent to the ECM through CAN communication line.
*3: This output signal is sent from the ECM through CAN communication line.
*4: With ESP models.
*5: Without ESP models.
Multiport Fuel Injection (MFI) SystemEBS010L9
INPUT/OUTPUT SIGNAL CHART
*1: This sensor is not used to control the engine system under normal conditions.Input (Sensor) ECM Function Output (Actuator)

Camshaft position sensor (PHASE)

Crankshaft position sensor (POS)

Mass air flow sensor

Engine coolant temperature sensor

Heated oxygen sensor 1

Throttle position sensor

Accelerator pedal position sensor

Park/neutral position (PNP) switch

Intake air temperature sensor

Power steering pressure sensor

Ignition switch

Battery voltage

Knock sensor

Refrigerant pressure sensor

Stop lamp switch

Heated oxygen sensor 2*1

TCM (Transmission control module)*2

ESP/TCS/ABS control unit*2 *4

ABS actuator and electric unit
(control unit)*2 *5

Air conditioner switch

Wheel sensor*2

Electrical load signalFuel injection & mixture ratio control Fuel injector
Electronic ignition system Power transistor
Fuel pump control Fuel pump relay
On board diagnostic system
MI (On the instrument panel)*
3
Heated oxygen sensor 1 heater control Heated oxygen sensor 1 heater
Heated oxygen sensor 2 heater control Heated oxygen sensor 2 heater
EVAP canister purge flow controlEVAP canister purge volume control
solenoid valve
Air conditioning cut control Air conditioner relay
Cooling fan control Cooling fan relay
Sensor Input Signal to ECMECM
functionActuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
3 and piston position
Fuel injec-
tion & mix-
ture ratio
controlFuel injector Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Heated oxygen sensor 1 Density of oxygen in exhaust gas
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Park/neutral position (PNP) switch Gear position
Knock sensor Engine knocking condition
Battery
Battery voltage*
3
Power steering pressure sensor Power steering operation
Heated oxygen sensor 2*
1Density of oxygen in exhaust gas
Wheel sensor*
2Vehicle speed
Air conditioner switch Air conditioner operation

ENGINE CONTROL SYSTEM
EC-37
[QR (WITH EURO-OBD)]
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Electronic Ignition (EI) SystemEBS010LA
INPUT/OUTPUT SIGNAL CHART
*1: This signal is sent to the ECM through CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
The ignition timing is controlled by the ECM to maintain the best air-
fuel ratio for every running condition of the engine. The ignition tim-
ing data is stored in the ECM. This data forms the map shown.
The ECM receives information such as the injection pulse width and
camshaft position sensor signal. Computing this information, ignition
signals are transmitted to the power transistor.
e.g., N: 1,800 rpm, Tp: 1.50 msec
A °BTDC
During the following conditions, the ignition timing is revised by the
ECM according to the other data stored in the ECM.

At starting

During warm-up

At idle

At low battery voltage

During acceleration
The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed
within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not
operate under normal driving conditions. If engine knocking occurs, the knock sensor monitors the condition.
The signal is transmitted to the ECM. The ECM retards the ignition timing to eliminate the knocking condition.
Air Conditioning Cut ControlEBS010LB
INPUT/OUTPUT SIGNAL CHART
*1: This signal is sent to the ECM through CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.Sensor Input Signal to ECMECM func-
tionActuator
Crankshaft position sensor (POS)
Engine speed*
2
piston position
Ignition
timing con-
trolPower transistor Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Knock sensor Engine knocking
Park/neutral position (PNP) switch Gear position
Battery
Battery voltage*
2
Wheel sensor*1Vehicle speed
SEF742M
Sensor Input Signal to ECM ECM function Actuator
Air conditioner switch Air conditioner ON signal
Air conditioner
cut controlAir conditioner relay Throttle position sensor Throttle valve opening angle
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
2
Engine coolant temperature sensor Engine coolant temperature
Battery
Battery voltage*
2
Refrigerant pressure sensor Refrigerant pressure
Power steering pressure sensor Power steering operation
Wheel sensor*
1Vehicle speed

EC-38
[QR (WITH EURO-OBD)]
ENGINE CONTROL SYSTEM

SYSTEM DESCRIPTION
This system improves engine operation when the air conditioner is used.
Under the following conditions, the air conditioner is turned off.

When the accelerator pedal is fully depressed.

When cranking the engine.

At high engine speeds.

When the engine coolant temperature becomes excessively high.

When operating power steering during low engine speed or low vehicle speed.

When engine speed is excessively low.

When refrigerant pressure is excessively low or high.
Fuel Cut Control (at No Load and High Engine Speed)EBS010LC
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line.
SYSTEM DESCRIPTION
If the engine speed is above 1,800 rpm under no load (for example, the shift position is neutral and engine
speed is over 1,800 rpm) fuel will be cut off after some time. The exact time when the fuel is cut off varies
based on engine speed.
Fuel cut will be operated until the engine speed reaches 1,500 rpm, then fuel cut will be cancelled.
NOTE:
This function is different from deceleration control listed under Multiport Fuel Injection (MFI) System, EC-34
.
CAN Communication UnitEBS010LD
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
Sensor Input Signal to ECM ECM function Actuator
Park/neutral position (PNP) switch Neutral position
Fuel cut control Fuel injector Accelerator pedal position sensor Accelerator pedal position
Engine coolant temperature sensor Engine coolant temperature
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed
Wheel sensor* Vehicle speed

ENGINE CONTROL SYSTEM
EC-41
[QR (WITH EURO-OBD)]
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M/T MODELS WITH ESP
System Diagram
Input/output Signal Chart
T: Transmit R: Receive
*1: YD engine models only
*2: QR engine models only
PKIA6459E
Signals ECMESP/TCS/ABS
control unitSteering angle
sensor4WD control
unitCombination
meter
Stop lamp switch signal T R
Engine speed signal T R R R
Engine coolant temperature signal TR
Accelerator pedal position signal T R R
A/C switch signal*
1RT
A/C compressor feedback signal*
2TR
Vehicle speed signalTRR
RT
ABS warning lamp signal T R
Brake warning lamp signal T R
SLIP indicator lamp signal T R
ESP OFF indicator lamp signal T R
4WD warning lamp signalTR
4WD mode indicator lamp signalTR
Parking brake switch signalRT
MI signal TR
Glow indicator lamp signal*
1TR
Steering angle sensor signal R T